CN107012073B - Aerobic fermentation system - Google Patents
Aerobic fermentation system Download PDFInfo
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- CN107012073B CN107012073B CN201710405507.9A CN201710405507A CN107012073B CN 107012073 B CN107012073 B CN 107012073B CN 201710405507 A CN201710405507 A CN 201710405507A CN 107012073 B CN107012073 B CN 107012073B
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- 238000010564 aerobic fermentation Methods 0.000 title claims abstract description 90
- 238000005273 aeration Methods 0.000 claims abstract description 100
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 230000004151 fermentation Effects 0.000 claims abstract description 44
- 238000000855 fermentation Methods 0.000 claims abstract description 39
- 239000007789 gas Substances 0.000 claims abstract description 38
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 45
- 239000001301 oxygen Substances 0.000 claims description 45
- 229910052760 oxygen Inorganic materials 0.000 claims description 45
- 238000012806 monitoring device Methods 0.000 claims description 28
- 238000003756 stirring Methods 0.000 claims description 27
- 238000007791 dehumidification Methods 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 239000002912 waste gas Substances 0.000 abstract description 19
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 32
- 230000000694 effects Effects 0.000 description 6
- 239000010802 sludge Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009264 composting Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241001052560 Thallis Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000001706 oxygenating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/36—Means for collection or storage of gas; Gas holders
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/02—Stirrer or mobile mixing elements
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
- C12M41/34—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration of gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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Abstract
The embodiment of the invention provides an aerobic fermentation system. An aerobic fermentation device is arranged in the aerobic fermentation system, and a gas collecting device and a condensed water collecting part are also arranged above the aerobic fermentation device; the gas collecting device is communicated with aeration equipment of the aerobic fermentation device through a pipeline; the condensed water collecting part comprises a collecting device and a cooling device, a collecting cavity is formed in the collecting device, and the cooling device is arranged in the collecting cavity; an air draft device is also arranged in the pipeline; an air inlet of the air draft device is communicated with the gas collecting device, and an air outlet of the air draft device is communicated with the aeration device; at least one of a dehumidifying device and a heating device is arranged on the pipeline. The aerobic fermentation system provided by the embodiment of the invention can collect waste gas and condensed water generated during fermentation of a fermented product by arranging the gas collecting device and the condensed water collecting part, fully utilizes heat in the system, and simultaneously realizes the recycling of the waste gas and the condensed water; the purpose of waste gas utilization is achieved by connecting the gas collecting device and the aeration equipment through the pipeline.
Description
Technical Field
The invention relates to the field of aerobic fermentation, in particular to an aerobic fermentation system.
Background
With the development of urban treatment in China, the discharge amount of sewage is increased, so that urban sludge is increased, and the sludge is a product after sewage treatment and is an extremely complex non-uniform mass composed of organic residues, bacteria, thalli, inorganic particles, colloid and the like. The original sludge treatment method comprises incineration, burial, sea filling and the like, so that living environment is polluted, and resource waste is caused to a certain extent.
Sludge treatment is often carried out by fermentation composting, but during fermentation, a lot of waste gas which is far higher than normal temperature gas and contains a large amount of water vapor is generated, and the waste gas is often treated by directly discharging the waste gas into the atmosphere or collecting the waste gas and then carrying out secondary treatment by a filter tank in the prior art. Therefore, the heat in the waste gas is not fully utilized, and the water vapor is not effectively removed and recovered, so that the fermentation period is possibly prolonged or the fermentation effect is possibly influenced, and the discharged gas also possibly pollutes the environment.
The partial fermentation and composting treatment are carried out in open air, so that the ambient environment is influenced, and the temperature change of fermentation materials caused by environmental or human factors is large, so that the fermentation effect is influenced.
Disclosure of Invention
The invention provides an aerobic fermentation system, which aims to solve the problems of low fermentation efficiency caused by low oxygen supply temperature in the fermentation process in the prior art, and no effective collection, treatment or utilization of generated waste gas and condensed water.
In order to achieve the above object, an embodiment of the present invention provides an aerobic fermentation system, wherein an aerobic fermentation device is provided, and a gas collecting device and a condensed water collecting part are further provided above the aerobic fermentation device; the gas collecting device is communicated with aeration equipment of the aerobic fermentation device through a pipeline; the condensed water collecting part comprises a collecting device and a cooling device, a collecting cavity is formed in the collecting device, and the cooling device is arranged in the collecting cavity; an air draft device is also arranged in the pipeline; an air inlet of the air draft device is communicated with the air collecting device, and an air outlet of the air draft device is communicated with the aeration device; at least one of dehumidifying equipment and heating equipment is arranged on the pipeline.
Optionally, the aerobic fermentation system further comprises a temperature sensor and a control device, the temperature sensor is connected with the control device, the temperature sensor is arranged at the downstream of the air draft device and detects the temperature of air in the pipeline, and the control device obtains the temperature detected by the temperature sensor and controls the heating device to adjust the temperature of air in the pipeline according to the temperature value.
Optionally, an oxygen concentration monitoring device and an air humidity monitoring device are further arranged on the pipeline, the oxygen concentration monitoring device and the air humidity monitoring device are arranged at the downstream of the air draft device, the oxygen concentration monitoring device detects oxygen content, the air humidity monitoring device detects air humidity, and the control device obtains the oxygen content detected by the oxygen concentration monitoring device and the air humidity detected by the air humidity monitoring device, and controls the oxygen supplementing device and the switch of the dehumidification device according to the oxygen content and the air humidity.
Optionally, the collecting device includes first curb plate and second curb plate, the collection chamber is located first curb plate with between the second curb plate, be equipped with the collection portion on the lateral wall of one side of second curb plate keeping away from the collection chamber, be close to the bottom of collection portion, be equipped with the intercommunication on the second curb plate the collection portion with the through-hole of collection chamber.
Optionally, the gas collecting device is communicated with a cooling loop of the cooling device; the cooling loop is arranged on one side of the first side plate, which is close to the collecting cavity, or the cooling loop is arranged on one side of the second side plate, which is close to the collecting cavity, or the cooling loop is arranged at other positions in the middle of the collecting cavity.
Optionally, the aeration equipment is of a plate-shaped structure with at least two independent aeration chambers inside, the aeration equipment is provided with a plurality of first aeration holes at least along the height direction, and the first aeration Kong Kaishe is arranged on the surface of the aeration equipment and is communicated with the aeration chambers; alternatively, the aeration device is at least one row of aeration pipes, and the first aeration Kong Kaishe is on the surface of the aeration pipes.
Optionally, the aeration pressures of the first aeration holes at different heights are different.
Optionally, at least one of the dehumidifying device and the heating device is disposed upstream or downstream of the drawing device.
Optionally, an air inlet channel is arranged at the bottom of the aerobic fermentation device, and a plurality of second aeration holes are formed in the air inlet channel.
Optionally, the aerobic fermentation device further comprises a fermentation bin, wherein a stirring device is arranged in the fermentation bin and comprises a stirring shaft and stirring blades, and the stirring blades are arranged along the axial direction and/or the circumferential direction of the stirring shaft at intervals.
The invention has the advantages and positive effects that:
according to the aerobic fermentation system provided by the embodiment of the invention, the gas collecting device and the condensed water collecting part are arranged in the accommodating structure, so that waste gas and condensed water generated during fermentation of a fermented product can be collected, and the heat loss is reduced; the gas collecting device and the aeration equipment are connected through the pipeline, so that newly added waste gas treatment facilities are reduced or avoided, the purpose of waste gas utilization is achieved, the fermentation efficiency is improved by utilizing the residual heat in steam, and the energy consumption during fermentation is effectively reduced; by collecting condensed water, the purpose of waste water utilization is achieved, and resources are effectively saved.
Drawings
FIG. 1 is a schematic structural diagram of an aerobic fermentation system provided by an embodiment of the present invention;
fig. 2 is a schematic structural view of a condensed water collecting portion provided in an embodiment of the present invention;
fig. 3 is a schematic structural view of an aeration apparatus according to an embodiment of the present invention.
Reference numerals illustrate:
1. a gas collecting device; 2. a condensed water collection unit; 21. a collecting device; 211. a first side plate; 212. a second side plate; 213. a collection section; 214. a through hole; 22. a cooling device; 23. a collection chamber; 3. a pipeline; 4. an aeration device; 41. aeration holes; 5. an air extraction device; 6. a dehumidifying apparatus; 7. a heating device; 8. a stirring device; 9. a temperature sensor; 10. an oxygen concentration monitoring device; 11. an air humidity monitoring device; 12. an intake passage.
Detailed Description
Exemplary embodiments of the present invention are described in detail below with reference to the attached drawings.
The embodiment of the invention provides an aerobic fermentation system. An aerobic fermentation device is arranged in the aerobic fermentation system, and a gas collecting device 1 and a condensate water collecting part 2 are also arranged above the aerobic fermentation device; the gas collecting device 1 is communicated with an aeration device 4 of the aerobic fermentation device through a pipeline 3; the condensed water collecting part 2 comprises a collecting device 21 and a cooling device 22, a collecting cavity 23 is formed in the collecting device 21, and the cooling device 22 is arranged in the collecting cavity 23; an air draft device 5 is also arranged in the pipeline 3; an air inlet of the air draft device 5 is communicated with the gas collecting device 1, and an air outlet of the air draft device 5 is communicated with the aeration device 4; at least one of a dehumidifying device 6 and a heating device 7 is also provided in the pipeline 3.
The aerobic fermentation system provided by the embodiment of the invention can collect waste gas and condensed water generated during fermentation of a fermented product by arranging the gas collecting device 1 and the condensed water collecting part 2, fully utilizes heat in the system, and simultaneously realizes the recycling of the waste gas and the condensed water; the purpose of waste gas utilization is achieved by connecting the gas collecting device 1 and the aeration equipment 4 through the pipeline.
It should be noted that the aerobic fermentation system is not a completely sealed space, but is a relatively sealed space, and the gas collecting device 1 is used for forming a relatively negative pressure environment in the aerobic fermentation system, so that the leakage of odor in the aerobic fermentation process is avoided, and meanwhile, the fresh air is timely supplemented to the aerobic fermentation system by the outside, and the oxygen content is ensured.
Specifically, as shown in fig. 1, the gas collecting device 1 is disposed above the aerobic fermentation device because the density of the exhaust gas generated by the fermented product during the aerobic fermentation at a temperature higher than that of the normal temperature gas tends to be lower than that of the air, and thus the exhaust gas generated by the fermented product during the aerobic fermentation rises to the upper part of the aerobic fermentation device. The gas collecting device 1 can collect waste gas generated in the aerobic fermentation process of the fermented product on one hand, and can collect air in the aerobic fermentation device on the other hand, and the collected gas is introduced into the aeration equipment 4 for aeration through the pipeline 3, so that the pollution of the waste gas to the environment is effectively reduced, and the energy consumption consumed by aeration is reduced.
An exhaust device 5 is arranged at the air outlet end of the air collecting device 1 and/or the air inlet end of the aeration device 4 and/or the middle section of the pipeline 3. The exhaust equipment 5 is added to enhance the conversion efficiency of the hot gas collected by the gas collecting device 1 into the aeration equipment 4, thereby improving the aerobic fermentation efficiency of the fermented product and shortening the aerobic fermentation period of the fermented product. Specifically, the method for setting the air extraction device 5 is that the air inlet end to the air outlet end of the air extraction device 5 are all set along the direction of the flow direction of the air.
The dehumidification device 6 is arranged to remove the water in the pipeline 3, so that the phenomenon that the removed water enters the material again in the aerobic fermentation process to influence the effect of the aerobic fermentation is avoided. The purpose of the heating device 7 is to heat the air in the pipeline 3 to ensure the temperature required for aerobic fermentation of the material. Of course, when the temperature in the aerobic fermentation apparatus is not lower than the temperature required for aerobic fermentation of the material, the heating apparatus 7 may not be turned on. Preferably, a dehumidification device 6 and a heating device 7 are provided in the pipeline 3.
Preferably, at least one of the dehumidifying apparatus 6 and the heating apparatus 7 is disposed upstream or downstream of the drawing apparatus 5.
The purpose of arranging the dehumidifying apparatus 6 upstream of the suction apparatus 5 is to prevent air that has not been dehumidified from entering the suction apparatus 5, affecting the service life of the suction apparatus 5 or causing other problems; the heating device 7 is arranged at the upstream of the air draft device 5, so that the air outlet end of the air draft device 5 can blow out gas with a certain temperature, and the temperature required by the aerobic fermentation of the material is ensured.
Preferably, in order to ensure that the gas in the pipeline 3 does not decrease in temperature during circulation, a thermal insulation material is also wrapped on the outer side of the pipeline 3.
Preferably, the aerobic fermentation system further comprises a temperature sensor 9 and a control device, wherein the temperature sensor 9 is connected with the control device, the temperature sensor is arranged at the downstream of the air draft device 5, the temperature sensor 9 is used for detecting the air temperature in the pipeline 3, the control device obtains the temperature detected by the temperature sensor 9, and the heating device 7 is controlled to adjust the air temperature in the pipeline 3 according to the temperature value so as to meet the temperature requirement of the aerobic fermentation of the material; still be equipped with oxygen concentration monitoring devices 10 and air humidity monitoring devices 11 on the pipeline 3, oxygen concentration monitoring devices 10 with air humidity monitoring devices 11 sets up the low reaches of updraft ventilator 5, oxygen concentration monitoring devices 10 detect oxygen content air humidity monitoring devices 11 detect air humidity, controlling means acquires oxygen concentration monitoring devices 10 detects oxygen content and air humidity that air humidity monitoring devices 11 detected, and according to oxygen content and air humidity control give oxygen equipment oxygenating and dehumidification equipment 6's switch.
For example, the control device for controlling temperature, humidity and oxygen content may be a PLC control system in which a PLC control unit is connected with sensing devices (such as a temperature sensor 9, an oxygen concentration monitoring device 10, an air humidity monitoring device 11, etc.) and related operating devices (such as a power device for controlling rotation of the stirring device 8, etc.) in the aerobic fermentation device to be able to automatically control the operating state of the aerobic fermentation system in real time according to the PLC control unit. For example, when the temperature sensor 9 detects that the air temperature in the pipeline 3 is too low, the control device controls the heating device 7 to heat the air in the pipeline 3; when the temperature sensor 9 detects that the air temperature in the pipeline 3 is too high, the control device controls the heating device 7 to stop heating the air in the pipeline 3, and appropriately adjusts the air suction device 5 to increase the rotating speed so as to increase the flow rate of the air. When the humidity in the aerobic fermentation system is too low or too high, the aim of adjusting the humidity in the aerobic fermentation system can be achieved by controlling the opening or closing of the dehumidification equipment 5. When the oxygen content in the aerobic fermentation system is not high, the oxygen supply is adjusted by controlling the oxygen supply equipment connected with the aeration equipment 4 to supply oxygen, and the material is supplied with oxygen through the aeration equipment 4. Therefore, the automation degree of the aerobic fermentation system provided by the embodiment of the invention can be greatly improved.
As shown in fig. 2, the condensed water collecting unit 2 is also provided above the aerobic fermentation apparatus. The reason for this setting is that through induced air system water conservancy diversion, can make the high temperature saturated vapor water conservancy diversion in the fermentation space to the top, and the vapor that aerobic fermentation produced can aggregate and form the comdenstion water in aerobic fermentation device's top, increases comdenstion water collection portion 2 and can realize the quick collection of moisture in the saturated vapor, also can prevent simultaneously that the comdenstion water from dropping to the aerobic fermentation system in influencing the fermentation effect.
The condensed water collecting part 2 mainly comprises a collecting device 21 and a cooling device 22, a collecting cavity 23 in the collecting device 21 is used for collecting condensed water, the cooling device 22 is used for cooling water vapor, the cooling device 22 is arranged in the collecting cavity 23 so as to convert the water vapor in the collecting cavity 23 into condensed water, and the cooling device 22 can be any device which can play a role in cooling the water vapor in the prior art.
Optionally, the collecting device 21 includes a first side plate 211 and a second side plate 212, the collecting cavity 23 is located between the first side plate 211 and the second side plate 212, a collecting portion 213 is disposed on a side wall of the second side plate 212 on a side far away from the collecting cavity 23, and a through hole 214 communicating the collecting portion 213 and the collecting cavity 23 is disposed on the second side plate 212 near a bottom of the collecting portion 213.
Specifically, the first side plate 211 and the second side plate 212 form the collecting cavity 23, and a diversion portion for diversion and/or a drainage portion for draining condensed water may be further formed on the first side plate 211 and/or the second side plate 212. Wherein, the first side plate 211 faces away from the inner space of the aerobic fermentation system, the second side plate 212 faces towards the inner space of the aerobic fermentation system, and a collecting part 213 for collecting condensed water is arranged on the side wall of the second side plate 212 facing towards the inner space of the aerobic fermentation system. The collecting portion 213 may be a plate-like structure or a groove-like structure protruding from the surface of the second side plate 212 and inclined upward, and the specific inclination angle may be determined according to actual needs. The collecting portion 213 which is obliquely upward arranged on the second side plate 212 not only can block and collect moisture formed on the second side plate 212 in time, but also can collect water which drops back and is formed on the lower surface of the collecting portion 213 through the adjacent collecting portion 213, and quickly flows back into the collecting cavity 23 through the through hole 214 which is communicated with the collecting cavity 23 through the through hole 214, so that the collecting portion 213 can absorb the water which drops back more fully. The second side plate 212 and the collecting portion 213 may be welded or may be connected by a hinge. When the moisture in the collecting cavity 23 falls down through the through hole 214, the collecting part 213 can receive the moisture again, so that the moisture flows back into the collecting part 213, and then the moisture flows back into the collecting cavity 23 through the through hole 214 at the bottom of the collecting part 213, so that the moisture is prevented from dripping back into the material to be evaporated. Meanwhile, the water vapor can be condensed on the lower surface of one collecting part 213, the condensed moisture flows downwards into the collecting part 213 below under the action of gravity, and the moisture flows back into the collecting cavity 23 through the through hole 214, so that the moisture is further prevented from dripping back into the material to be evaporated.
Optionally, the gas collection device is in communication with a cooling circuit of the cooling device 22; wherein, the cooling circuit is disposed at one side of the first side plate 211 near the collecting cavity 23, or the cooling circuit is disposed at one side of the second side plate near the collecting cavity 23, or the cooling circuit is disposed at other positions in the middle of the collecting cavity 23.
Specifically, the cooling circuit is arranged inside the collecting chamber 23, in particular on the first side plate 211, or on the second side plate 212. The cooling loop cools the water vapor entering the collecting cavity 23, the water vapor is cooled and condensed into water drops to be gathered in the collecting cavity 23, and finally the water drops flow into the water draining part outside the collecting cavity 23 through the flow guiding part at the bottom of the collecting cavity 23.
Optionally, the oxygen supply device is arranged upstream or downstream of the suction device 5.
In the present embodiment, the position of the oxygen supply device relative to the air extraction device 5 may be flexibly set, but it should be noted that, in a preferred embodiment, the oxygen supply device is disposed downstream of the dehumidification device 6, so as to ensure that oxygen provided by the oxygen supply device is not polluted by air containing moisture, and ensure the purity of oxygen in the aerobic fermentation process of the material.
Optionally, as shown in fig. 3, the aerobic fermentation device further comprises a fermentation chamber, and the aeration device 4 is arranged on the bottom wall of the fermentation chamber and extends upwards; the aeration equipment 4 can be an air outlet hole arranged at the bottom of the fermentation bin, and the air outlet hole is communicated with the air draft equipment 5.
In a preferred embodiment, the aeration device 4 has a plate-shaped structure with at least two independent aeration chambers inside, and the first aeration holes 41 are formed on the surface of the aeration device 4 and are communicated with the aeration chambers; alternatively, the aeration device 4 may be at least one row of aeration tubes, and the first aeration holes 41 are formed in the surface of the aeration tubes.
Specifically, in one embodiment, the aeration apparatus 4 is an aeration plate provided on the bottom wall, and the aeration plate is a plate-like structure perpendicular to the bottom wall. The inside a plurality of independent aeration chamber that have of aeration board, every aeration chamber is connected with different air supply equipment (such as fan etc.) for the first aeration hole 41 of co-altitude not provides different aeration pressure, fully guarantees the effective oxygen suppliment of the material of co-altitude not, prevents simultaneously that gas from concentrating the discharge from the lower top aeration hole of pressure. Preferably, in order to prevent the first aeration holes 41 from being blocked by the material, the first aeration holes 41 may be elongated in a straight shape, and such a hole shape has good stretchability and instantaneous closeness. Of course, the first aeration holes 41 may take other shapes, or a suck-back preventing device may be provided on the first aeration holes 41 to prevent the material from entering the aeration plate. In the practical application process, the aeration plate is not limited to a rectangle, and can also be a trapezoid or the like. The preferred shape is trapezoidal, i.e. the width of the bottom of the aeration panel is greater than the width of the top of the aeration panel. This is more advantageous for the full contact of the gas with the fermentation material.
In another embodiment, at least one row of aeration tubes may be disposed along the length and/or width of the fermentation chamber. Preferably, a plurality of rows of aeration pipes are arranged in the fermentation bin, and the plurality of rows of aeration pipes are uniformly arranged at intervals. A plurality of first aeration holes 41 are provided on each aeration tube. Correspondingly, the first aeration holes 41 can also adopt a straight long hole or other shapes, and a suck-back prevention device can also be arranged on each first aeration hole 41.
Preferably, in the above two embodiments, the aeration pressures of the first aeration holes 41 located at different heights are different. For example, the independent aeration chambers in the aeration device 4 can be uniformly arranged along the height direction of the aeration device 4, each independent aeration chamber is respectively communicated with different air supply devices, and the aeration chambers at the same height can be communicated with the same air supply device, so that the cost is saved, and the aeration pressure of the first aeration holes 41 at the same height is ensured to be the same. Preferably, the air supply pressure among different air supply devices is different, so that the difference of the aeration pressure of the first aeration holes 41 with different heights is ensured, the pressure difference of materials with different heights in the fermentation bin is further met, the materials with different heights can be supplied with oxygen which is suitable for the needed aerobic fermentation amount, and the fermentation efficiency of the materials in the fermentation bin is effectively ensured. For example, the aeration pressure of the first aeration holes 41 located at the low position may be set to be larger than the aeration pressure of the first aeration holes 41 located at the high position. In this way, the material at the lower position can obtain better aeration effect, so that the material at the upper position can realize aerobic fermentation under the combined action of the first aeration holes 41 and oxygen in the air, and the oxygen supply is effectively saved.
Preferably, the bottom of the aerobic fermentation device is provided with an air inlet channel 12, and a plurality of second aeration holes are formed in the air inlet channel 12. Thus, the aerobic fermentation efficiency of the materials can be further improved.
Preferably, the aerobic fermentation device further comprises a stirring device 8 arranged in the fermentation chamber.
The stirring device 8 arranged in the fermentation bin can loosen materials in the fermentation bin on one hand, and can meet the feeding and discharging requirements of the fermentation bin on the other hand. In a preferred embodiment, the stirring device 8 is movable, so that an operator can flexibly move the stirring device 8 to stir, loosen and feed and discharge materials according to the specific situation of material accumulation in the fermentation bin.
In one embodiment, the stirring device 8 may be provided in the form of a stirring shaft and stirring paddle combination, the plurality of stirring paddles being uniformly arranged along the axial direction and/or the radial direction of the stirring shaft. The power of the stirring paddle can be provided by a motor. For example, the paddles may be connected to the motor through a gear set and a speed reducer. In other embodiments, the stirring device 8 may be provided in other forms, such as a blade.
Preferably, a plurality of groups of stirring devices 8 are arranged in the fermentation bin, so that materials in the fermentation bin can be effectively stirred and loosened better.
Preferably, the operator can flexibly select the synchronous and/or asynchronous actions of each group of stirring devices 8 according to the actual situation so as to flexibly adapt to materials with different stacking degrees in the fermentation bin.
Optionally, the aerobic fermentation system further comprises an openable and closable door and/or window. By arranging the openable door and/or window, operators can conveniently observe the condition of materials in the aerobic fermentation system, so as to adjust parameters such as the material feeding and discharging speed, the temperature in the aerobic fermentation system and the like in time.
The invention has the following beneficial effects:
according to the aerobic fermentation system provided by the embodiment of the invention, the gas collecting device and the condensed water collecting part are arranged in the aerobic fermentation system, so that waste gas and condensed water generated during aerobic fermentation of a fermented product can be collected, and the heat loss is reduced; the gas collecting device and the aeration equipment are connected through the pipeline, so that the purpose of waste gas utilization is achieved, and the energy consumption of the material during aerobic fermentation is effectively reduced; the purpose of waste water utilization is achieved by collecting condensed water, and resources are saved. The moisture in the pipeline can be removed by arranging the dehumidification equipment, so that the phenomenon that the moisture removed in the aerobic fermentation process enters materials again to influence the effect of the aerobic fermentation is avoided. By arranging the heating equipment, the air in the pipeline can be heated so as to ensure the temperature required by the aerobic fermentation of the materials. Through setting up agitated vessel, can loosen the material in the fermentation storehouse, on the other hand also can satisfy the business turn over material demand in fermentation storehouse. By arranging the temperature sensor and the control equipment, the automation degree of the aerobic fermentation system provided by the embodiment of the invention is greatly improved.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. An aerobic fermentation system is provided with an aerobic fermentation device, and is characterized in that a gas collecting device (1) and a condensed water collecting part (2) are arranged above the aerobic fermentation device;
the gas collecting device (1) is communicated with the aeration equipment (4) of the aerobic fermentation device through a pipeline (3); the aeration equipment (4) is of a plate-shaped structure with at least two independent aeration chambers inside, the aeration equipment (4) is provided with a plurality of first aeration holes (41) at least along the height direction, the first aeration holes (41) are formed on the surface of the aeration equipment (4) and are communicated with the aeration chambers, and the aeration pressures of the first aeration holes (41) of the aeration equipment (4) at different heights are different; an air draft device (5) is arranged in the pipeline (3), an air inlet of the air draft device (5) is communicated with the gas collecting device (1), and an air outlet of the air draft device (5) is communicated with the aeration device (4); at least one of a dehumidifying device (6) and a heating device (7) is also arranged on the pipeline (3);
the condensate water collecting part (2) comprises a collecting device (21) and a cooling device (22), a collecting cavity (23) is formed in the collecting device (21), the cooling device (22) is arranged in the collecting cavity (23), the collecting cavity (23) is formed by a first side plate (211) and a second side plate (212) of the collecting device (21), the first side plate (211) faces away from the inner space of the aerobic fermentation system, the second side plate (212) faces towards the direction close to the inner space of the aerobic fermentation system, and the collecting cavity (23) is positioned between the first side plate (211) and the second side plate (212); the collecting cavity (23) is further provided with a plurality of collecting parts (213) for collecting condensed water on the second side plate (212), the collecting parts (213) are of plate-shaped structures or groove-shaped structures, the collecting parts (213) are positioned on the side wall of the second side plate (212) which is far away from the collecting cavity (23), and the collecting parts (213) protrude out of the surface of the second side plate (212) at a preset inclined upward angle; the collecting part (213) can block and collect water formed on the second side plate (212), and the adjacent collecting part (213) can collect water which drops back on the lower surface of the collecting part (213) formed above; a through hole (214) which is communicated with the collecting part (213) and the collecting cavity (23) is arranged on the second side plate (212) near the bottom of the collecting part (213);
the gas collecting device (1) is communicated with a cooling loop of the cooling device (22), and the cooling loop is arranged on one side of the first side plate (211) close to the collecting cavity (23); the cooling loop is used for cooling the water vapor entering the collecting cavity (23), so that the water vapor is cooled and condensed into water drops to be gathered in the collecting cavity (23), and finally flows into the drainage part outside the collecting cavity (23) through the diversion part at the bottom of the collecting cavity (23).
2. The aerobic fermentation system according to claim 1, further comprising a temperature sensor (9) and a control device, the temperature sensor (9) being connected to the control device, the temperature sensor (9) being arranged downstream of the air extraction device (5) and detecting the temperature of the air in the pipeline (3), the control device obtaining the temperature detected by the temperature sensor (9) and controlling the heating device (7) to adjust the temperature of the air in the pipeline (3) according to the temperature value.
3. The aerobic fermentation system according to claim 2, wherein the pipeline (3) is further provided with an oxygen concentration monitoring device (10) and an air humidity monitoring device (11), the oxygen concentration monitoring device (10) and the air humidity monitoring device (11) are arranged at the downstream of the air draft device (5), the oxygen concentration monitoring device (10) is used for detecting oxygen content, the air humidity monitoring device (11) is used for detecting air humidity, and the control device is used for acquiring the oxygen content detected by the oxygen concentration monitoring device (10) and the air humidity detected by the air humidity monitoring device (11) and controlling oxygen supplementing of the oxygen supplementing device and the switch of the dehumidifying device (6) according to the oxygen content and the air humidity.
4. Aerobic fermentation system according to claim 1, characterized in that at least one of the dehumidification device (6) and the heating device (7) is arranged upstream or downstream of the suction device (5).
5. The aerobic fermentation system according to claim 1, wherein an air inlet channel (12) is arranged at the bottom of the aerobic fermentation device, and a plurality of second aeration holes are formed in the air inlet channel (12).
6. The aerobic fermentation system according to claim 1, wherein the aerobic fermentation device further comprises a fermentation bin, a stirring device (8) is arranged in the fermentation bin, the stirring device (8) comprises a stirring shaft and stirring blades, and the stirring blades are arranged at intervals along the axial direction and/or the circumferential direction of the stirring shaft.
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| CN107716522B (en) * | 2017-11-10 | 2023-04-18 | 湖南省林业科学院 | Aerobic fermentation device and aerobic fermentation system adopting same |
| CN108503410A (en) * | 2017-12-13 | 2018-09-07 | 中山市和智电子科技有限公司 | A kind of compost reaction unit |
| CN108043166A (en) * | 2017-12-19 | 2018-05-18 | 大连理工大学 | A kind of damp and hot exhaust gas dehumidification deodorizing process device and method of biological treatment process |
| CN109929740A (en) * | 2019-04-28 | 2019-06-25 | 王毅 | Excrement sludge aerobic fermentation unit and its multilayer aerobic fermentation system |
| CN112174713B (en) * | 2020-09-30 | 2022-06-14 | 沈阳东源环境科技有限公司 | Ultrahigh-temperature aerobic fermentation device |
| CN112624820A (en) * | 2020-10-16 | 2021-04-09 | 机科发展科技股份有限公司 | Compost fermentation storehouse system |
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